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Coin Metrics website screenshot

Coin Metrics

Coin Metrics is a Boston-based crypto financial intelligence provider founded in 2017, selling institutional-grade cryptoasset network (on-chain) data, exchange market data (trades, quotes, order books, candles, derivatives), CMBI indexes, reference rates, and reference/security-master data. Everything is delivered through a single documented API v4 - REST at api.coinmetrics.io/v4 and WebSocket streaming at wss://api.coinmetrics.io/v4 as paid, API-key products - plus a free, keyless Community API at community-api.coinmetrics.io/v4 under a CC BY-NC 4.0 license, with flat files, Python and R clients, and Google Sheets as additional delivery channels. A complete OpenAPI 3.0.2 definition is published on the docs site. Coin Metrics is now part of Talos: coinmetrics.io 301-redirects to talos.com/our-solutions/data/overview, while docs.coinmetrics.io and the api/community-api hosts remain live under the Coin Metrics brand.

agent native

Real signal across most facets with visible, nameable gaps — the contract exists but is thin, or the portal is good while governance and commercial terms are absent.

Kin Score

API Evangelist profiles Coin Metrics the way a machine reads it — 25 machine-readable artifacts across 19 APIs, pulled from the provider's own public surface and indexed so a developer, an analyst, or an AI agent can evaluate it against every other provider on the network.

Every provider in the network is reduced to the same set of machine-readable artifacts — OpenAPI contracts, event specifications, GraphQL schemas, runnable collections, pricing and rate-limit signals, security posture, OAuth scopes, and the agent surfaces (MCP servers and skills) that let software drive the API on its own. We profile them because the interface is the part of a company you can actually inspect: it is a truer signal of what a provider does than any marketing page. From those artifacts we compute the Kin Score — Coin Metrics scores 57.4/100 (developing), with a separate agent-readiness read of 78/100 (agent native). The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.

Kin Score

This is the API Evangelist rating — a single, repeatable read computed from the artifacts on this page. Green fill is points earned; the red track is points possible, so every bar shows earned-versus-possible at a glance.

Kin Score Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5
Composite quality — 57.4/100 · developing
Contract Quality 17.7 / 25
Developer Ergonomics 16.1 / 20
Commercial Clarity 6.3 / 20
Operational Transparency 7.9 / 13
Governance 0.0 / 12
Discoverability 10.0 / 10
Regulatory · Securities & Market Data 8.1 / 15
Agent readiness — 78/100 · agent native
Machine-Readable Contract 18 / 18
Agentic Access Contract 15 / 15
MCP Server 12 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 8 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 7 / 7
Typed Event Surface 6 / 6
Agent Skills 5 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3

How we profile Coin Metrics

Each block below is one kind of artifact we hold for Coin Metrics. For each we say what it is and why it earns a place in the profile, then list every one we've indexed — capped at two rows, scroll within the panel for the rest.

APIs 19

Each API is captured as its own OpenAPI definition — every operation, parameter, and response. This is the single most useful machine-readable description of what an API does, and it's what lets us score, lint, mock, and generate against it without asking the provider for anything.

Individual APIs this provider publishes, each with its own machine-readable definition.

Coin Metrics Blockchain Explorer Job API

Endpoints for creating async jobs for blockchain entities.

Coin Metrics Blockchain Metadata API

Blockchain metadata endpoints

Coin Metrics Catalog API

Catalog of available for your `api_key` data.
Use the [Full catalog](#tag/Full-catalog) endpoints for the full list of supported by Coin Metrics data.
DEPRECATED: See ...

Coin Metrics Catalog v2 API

Catalog of available for your `api_key` data.
Use the [Full catalog V2](#tag/Full-catalog-v2) endpoints for the full list of supported by Coin Metrics data.

Coin Metrics Chain Monitor tools API

Endpoints for working with chain monitor data.

Coin Metrics Constituent Snapshots API

Endpoints for getting the snapshots of various constituents

Coin Metrics Constituent Timeframes API

Endpoints for getting the timeframes of various constituents

Coin Metrics Full blockchain entities v2 API

Endpoints for fetching full blockchain entities.

Coin Metrics Full catalog API

The Full catalog returns the full range of data that is supported by Coin Metrics across all our products.
If you are a client looking to understand the data that is availa...

Coin Metrics Full catalog v2 API

The Full catalog returns the full range of data that is supported by Coin Metrics across all our products.
If you are a client looking to understand the data that is availa...

Coin Metrics Jobs API

Jobs API endpoints

Coin Metrics List of blockchain entities v2 API

Endpoints for fetching lists of blockchain entities.

Coin Metrics Profile API

Profile endpoints

Coin Metrics Reference Data API

Metadata information of entities supported by Coin Metrics.

Coin Metrics Security Master API

Security Master endpoints

Coin Metrics Taxonomy API

Taxonomy endpoints

Coin Metrics Taxonomy Metadata API

Taxonomy Metadata endpoints

Coin Metrics Timeseries API

Endpoints for fetching metrics, market data, indexes and other time series data.

Coin Metrics Timeseries stream API

WebSocket endpoints for getting a real-time stream of metrics, market data, indexes and other time series data.

Scroll within the panel for all 19 ·

MCP Servers 1

Model Context Protocol servers expose these APIs directly to AI agents. We profile them because agent-native access is the fastest-growing way this provider's capabilities actually get used.

Model Context Protocol servers that expose these APIs to AI agents.

Rate Limits 1

Rate limits are the difference between a demo that works and a production integration that doesn't fall over. Publishing them is an operational-transparency signal — and a hard requirement for any agent that plans its own throughput.

Documented rate limits and quota policies.

Coin Metrics Rate Limits

6 limits

RATE LIMITS

Event Specifications 1

Not every API is request/response. AsyncAPI describes the event-driven and streaming side — the webhooks and channels — so the asynchronous half of the interface is documented the same way the synchronous half is.

AsyncAPI definitions for this provider's event-driven and streaming APIs.

Coin Metrics Timeseries Stream API

WebSocket streaming surface of the Coin Metrics API v4, derived from the published OpenAPI 3.0.2 definition (timeseries-stream tag). Real-time streams of metrics, market trades,...

ASYNCAPI

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals — the evidence that a provider takes security seriously enough to document it. We profile it because you can't govern what you can't see.

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Coin Metrics Authentication

apiKey · 1 scheme

SECURITY

Coin Metrics Domain Security

TLSv1.2 · HSTS · DNSSEC · DMARC

SECURITY

Agentic Access 1

An x-agentic-access contract marks which operations are safe for an agent to run on its own and which need a human in the loop. It is the difference between an API an agent can use and one it can use safely.

Recommended x-agentic-access execution contracts for AI agents.

Coin Metrics Agentic Access

203 operations · 3 acting

203 operations · 3 acting

AGENTIC

Resources

Every other property we hold for Coin Metrics — documentation, portals, status pages, policies, and corporate surface — grouped by the job it does, following the integrator's arc from getting started to running in production.

Get Started 3

Portal, sign-up, and the first successful call

Documentation 4

Reference material describing how the API behaves

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

Access & Security 2

Authentication, authorization, and security posture

Commercial 3

Pricing, plans, and the legal terms of use

Company 3

The organization behind the API

← All providers · Data indexed from github.com/api-evangelist/coin-metrics · machine-readable index on apis.io